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    <script>
        // 保留小数位数，四舍五入
        // num.toFixed()
        const num = 10.923
        console.log(num.toFixed(1))
        const num1 = 10
        console.log(num1.toFixed(2))

        // 传参数，也会四舍五入， 注意 返回值是字符串！！！！

        // 如果不传参数,四舍五入转为整数
        console.log(num.toFixed())  
    </script>
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